CEA is for Common Event Adapter (CEA) which is a z/OS component that enables the delivery of z/OS management data to clients, such as the CIM server.

Just like any other started task, an acid needs to be created for the started task and given a valid OMVS segment and the user authorized accordingly.
Please refer to the IBM manuals for the security requirements.

Then the acid needs to be associated with the started task by adding it to the STC table.